H01S 3/1109
Active mode locking
H01S3/1109 (Active mode locking) appears on 223 US grants and 166 published applications in this corpus.
Search patents in H01S- Granted patents
- 223
- Published applications
- 166
- Assignees
- 144
- Inventors
- 436
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 0 | 0 |
| 1993 | 7 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 7 | 0 |
| 1997 | 2 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 5 |
| 2003 | 7 | 7 |
| 2004 | 6 | 6 |
| 2005 | 5 | 6 |
| 2006 | 6 | 4 |
| 2007 | 2 | 5 |
| 2008 | 5 | 2 |
| 2009 | 6 | 5 |
| 2010 | 3 | 5 |
| 2011 | 4 | 7 |
| 2012 | 3 | 8 |
| 2013 | 4 | 4 |
| 2014 | 7 | 7 |
| 2015 | 7 | 11 |
| 2016 | 7 | 8 |
| 2017 | 10 | 7 |
| 2018 | 5 | 14 |
| 2019 | 16 | 10 |
| 2020 | 13 | 7 |
| 2021 | 7 | 6 |
| 2022 | 2 | 5 |
| 2023 | 7 | 12 |
| 2024 | 6 | 4 |
| 2025 | 10 | 6 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fiber-based optical modulator27 Jan 2026US 12,537,359 B2nLIGHT, Inc.
- Frequency-comb generation based on electro-optic phase-code mode-locking for circular-ranging OCT18 Nov 2025US 12,474,157 B2The General Hospital Corporation
- High-precision repetition rate locking apparatus for ultra-fast laser pulse7 Oct 2025US 12,438,335 B2Chongqing Huapu Intelligent Equipment Co., Ltd.
- Picosecond laser apparatus and methods for treating target tissues with same30 Sep 2025US 12,431,683 B2Cynosure, Inc.
- Multi-octave spanning millimeter wave source with phase memory30 Sep 2025US 12,431,687 B2Raytheon Company
- Phase synchronization laser device6 Aug 2026US 2026/0229841 A1Mitsubishi Electric Corporation
- Broadband Optical System With Semiconductor Optical Amplifier9 Jul 2026US 2026/0197077 A1Attochron, LLC
- Active Feedback Noise Reduction for Free Space Optical Communications26 Feb 2026US 2026/0058724 A1Attochron, LLC
- Universal frequency synthesizer29 Jan 2026US 2026/0031592 A1Imra America, Inc.
- Picosecond Laser Apparatus and Methods for Treating Target Tissues with Same4 Dec 2025US 2025/0366918 A1Cynosure, Inc.
Most cited
By later US patents
- Mode locking methods and apparatus228US 7,414,779 B2Massachusetts Institute of Technology · 2008
- Fourier domain mode locking: method and apparatus for control and improved performance113US 8,315,282 B2Massachusetts Institute of Technology · 2012
- Mode-locked multimode fiber laser pulse source108US 6,275,512 B1Imra America, Inc. · 2001
- Tuning of laser wavelength in actively mode-locked lasers82US 6,845,108 B1Calmar Optcom, Inc. · 2005
- Short pulse laser system78US 6,016,324 AJMAR Research, Inc. · 2000